Manufacture of lubricating compounds.



" lead, and for certain purposes,

UNITED STATES PATENT OFFICE.

JOHN ,EDULN 511111, 01 FRANKLIN, PENNfiYL'VANIA.

EANUFLQTU E OF LUBBIGA'EING COMPOUNDS.

80 Drawing.

To all whom it may concern:

Be it known that '1, JOHN EDWIN GILL, a citizen of the United States, residing at Franklin, in the county of Venango and State of Pennsylvania, have invented certain new useful Im rovements in Manufacture of "Lubricating gompounds, of which the following is a specification.

My invention relates to improvements in the manufacture of lubricatin compounds, particularly those known as cad-lined or galena oils.

In lubricating compounds of this character it is sought to combine the lubricating advantages of animal and etroleum oils with any of the suitable oxi s or carbonates of such as the lubrication oi 'ournals of railroad cars, it is found that if; t e compound containsa large portions may be varied according to the ifi'erent requirements, but I have ound by demonstration that as high as twice as muc lead-oxid, or lead carbonate, may be used for a given quantity of the finished product as has heretofore been used. The animal oil and lead commingled are then raised to a temperature of from 200 to 800 Fahrenheit, until the litharge and animal product are brou ht to a homogeneous, thorou lily combine fluid, to which ma be then a ded such other ingredients, suc as tallowor other grease, as may be chosen to form the base of the desired cake of grease which results when the compound is cooled to atmospheric temperature. To give a specific instance, I may take 7 50 pounds of animal, fish or ve etable oil or fat, mix it with 600 iounds o the oxid or carbonate of lead and erat-ure of between proportion of lead its efiicienc is great eat the same to a tem increa In the galena 01 s, or lubri- 200 to 300 Fahrenheit, then add tallow,

stearin, or the like, to the amount of from 14000 to 28000 pounds, accordin to the lead I desire to have in the ca e. The

rease cake so produced is heavily charged with the lead which has been combined therewith by heat and agitation care having been taken to bring the cake into a thoroughly homo eneous condition, and because of the soli form of the grease cake, the lead element, of course, cannot be precipitated, but will continue intimately combined with the animal roduct throughout the rease cake, under ail conditions.

ere I desire to obtain a more fluid lubricating compound, I next confine a lubricating oil, or oils, preferably petroleum )roducts, adjacent to the grease cake so ormed. For the best results, I use several petroleum oils of different specific gravities, confining such oils in an unmixed state adjacent to the grease cake, and by suitable means, as the ubric'ating compound is required, these confined oils are released in relatively small quantities and fed to the surface of the grease cake, which is simultaneously then worn down in proportion to the uantities of oils so released and suppli to the surface of the grease cake, so that the portion which is worn off the leadcharged grease cake and the released and eating compounds, heretofore drgoduced, it has been found first, that the ired quantity of lead oxid or carbonate cannot be cartied in suspension, as any excess over a given roportion will be recipitated; and second, that the complete compound is always in den or of losing some of its valuable pro erties y changes in the temperature, an o losingpther valuable properties ii allowed to stand for any len 11 of time by other causes not thoroughly understood. a

By m present invention, I have devised means or producing an improvement in lena oils, or lubricating com ound, wherey at least twice as much lea may be successfully incorporated and kept intimately commin ed throu bout the com ound, as compare with wit has been er etofore known, and I also succeed in avoiding deterioration by changes in temperature, and from other causes, thereby attaining the double advantage of producing first, a alone compound of much moreefiiciencv or certain par case, such as railroad car abrication; an second, the production of this compound in Such manner that deterioration thereof from chan s in temperature and other causes is avoi ed.

In practicing my invention, I take a uantity of any suitable animal oil and mix t erewith the esiredquantity for the given proportionate quantities of oils are interpurpose of any lead oxide or lead carbonates; mingled so as to form the desired lubricating )ut preferably of flake litharge. No particcom mind, which is at the same time supplied in its freshly compounded state to ular proportion or is required for my While this percentage of litharge vention, as the prothe surface to be lubricated.

confinement of the oils adjacent to the grease cake, the release of small quantities grease cake, and which serve as the oil containers, and the rease cake is yieldingly held in contact with the surface to be lubricated, which surface closes the u per ends of the oil receptacles, so that as t e surface to be lubricated moves, it will simultaneously wear down the lubricatin face of the grease cake, free the confined 01 s in quantlties proportionate to the amount of the grease cake which is worn off by the move ment of the surface to be lubricated, and

will mix these elements into the desired compound and at the point where the 0011? lied to the surface to be lubr -g pound is app cated. Obviously, however, the desired re, sult can be attained by any other mechanism which shall serve to br' and pro ortionate commlnghng of the substance o the grease cake, in limited quantities, with the oils, preferably petroleum oils,

which are protected against -deterioration until they are released in small quantlties forthe purpose of bein intermingled with the ease cake and ap led to thepoint to be lubricated. So also, or example, this result mi ht be attained more or efficiently 40 by con ning the grease cake in proximity to some of the paraflin waxes in such'mannor that the grease cake and the parafiin wax would be simultaneously and proportionately worn away, thereby releasing the free oil, which, as is well-known, is often contained in considerable quantities in some of the paraflin waxes.

Regardless, therefore, of whatever mechanism is utilized, it will be seen that I succeed, by my invention, in producing the following result: First. I make It practical to produce a lubricating compound which shall contain a far greater proportion of lead and which, therefore, shall be much more efficient for some requirements than any compound heretofore used. Second. I succeed in producing this result in such a manner as to prevent any possibility. of the precipitation or mechanical separation o the lead. Third. I succeed in doing this in such a about the desired manner that the lubricating compound when applied to the surface to be lubricated shall have minute quantities of lead thoroughly and uniformly intermingled throughout the entire lubricatin compound. Fourth. In the lead lined 01s heretofore used, it has been found necessary to apply the Oil to the journal by means of cotton waste, or like packing, which, acting to some extent as a ltering substance, has tended to filter the lead element out of the compound before it reaches the journal, whereas by my invention any such separation of the lead from the com ound is avoided. Fifth. I succeed in pr ucing and applying to a journal, or

other surface to be lubricated, a compound which shall not only be more highly charged with lead, but which also shall have all the advantages accruing from the combination with one or more etroleum oils, and yet, while the compound may be instantaneously produced and applied whenever required, I avoid any deterioration which has heretofore occurred in such compounds in the manner previously noted.

I claim:

1. The improvement in the art described. which comprises combining a compound of lead with animal oil, subjecting the combination to heat until brought to a homogeneous fluid condition, addin a quantity of animal roduct which is so id or semisolid at or ina temperature thereto, and cooling the resu ting compound to a homogeneous, relatively solid mass.

2. The improvement in the art described, which comprises combining a compound of lead with an animal product, subjecting the combination to heat until brought to a homogeneous fluid condition, cooling the fluid to 10 a relatively solid mass, and thereafter ntmuously and mechanically combining siFall quantities of said product with proport onate quantities of a petroleum oil so as to continuously produce the resulting lubricating compound as the same isrequired for consumption.

3. The improvement in the art described, which consists in combining a compound of lead with oily matter, heating the same to a temperature sufficient to combine the elements into a homogeneous fluid mass, then adding an animal fat which is solid or semisolid at ordinary temperatures to com ose the base of the cake to be formed, an allowing the same to cool.

JOHN EDWIN GILL.

Witnesses;

J. M. Smrson, WM. B. Gmrrmn. 

